發(fā)布時(shí)間：2018-07-12 11:47

  本文選題：水力射孔 + 低滲透　； 參考：《新疆大學(xué)》2015年碩士論文

【摘要】：目前我國的低滲透油氣田占有的比例越來越大。對(duì)國內(nèi)油氣田的開發(fā)己經(jīng)進(jìn)入了一個(gè)中、高含水期的階段,使儲(chǔ)油、氣層單一方向甚至是多個(gè)方向的滲透率越來越低,從而在采油過程中會(huì)產(chǎn)生過多的資源浪費(fèi),而且使地層的應(yīng)力分布更加不均勻,導(dǎo)致油、氣田高產(chǎn)穩(wěn)產(chǎn)的困難越來越大。重復(fù)水力壓裂作為老油氣田控水穩(wěn)油、綜合治理的重要措施。當(dāng)前國內(nèi)重復(fù)壓裂所面臨的問題嚴(yán)峻,急需新技術(shù)進(jìn)步來扭轉(zhuǎn)我國重復(fù)壓裂成功率低,重復(fù)壓裂后油氣層滲透率低巖層損傷大增產(chǎn)量低、有效期短、科研落后于現(xiàn)場施工等被動(dòng)局面。定向水力射孔壓裂技術(shù)是集定向水力射孔、壓裂于一體的新型增產(chǎn)體積改造技術(shù),可適用于低滲透油(氣)等復(fù)雜儲(chǔ)層的體積增產(chǎn)改造。定向水力射孔壓裂技術(shù)可以有效對(duì)老油氣田進(jìn)行重復(fù)壓裂,可以有效破碎不同方向新的儲(chǔ)油層并壓裂形成新的裂縫或者裂縫網(wǎng),提高老油氣層的滲透率,降低巖層的損傷,有利于提高油氣田的產(chǎn)量和最終開采率。本文通過對(duì)比傳統(tǒng)的重復(fù)水力壓裂技術(shù)的基礎(chǔ)上,分析了定向水力射孔壓裂技術(shù)的優(yōu)越性。通過分別對(duì)定向水力射孔沖蝕破儲(chǔ)層碎巖石機(jī)理、水力射孔孔道頂端裂縫的起裂和水力壓裂裂縫的轉(zhuǎn)向延伸機(jī)理進(jìn)行了研究分析。從理論上分析了定向水力射孔壓裂技術(shù)的可行性和優(yōu)越性。并通過采用數(shù)值模擬分析方法,來驗(yàn)證了定向水力射孔壓裂技術(shù)的可行性以及優(yōu)勢。通過理論和數(shù)值分析這兩種方法來說明:定向水力射孔壓裂技術(shù)能夠有效地提高儲(chǔ)層的滲透能力,提高油氣田的增產(chǎn)能力。
[Abstract]:At present, the proportion of low permeability oil and gas fields in China is increasing. The development of domestic oil and gas fields has entered a stage of high water cut period, which makes the permeability of oil storage and gas reservoir single direction or even multiple direction lower and lower, thus resulting in excessive waste of resources in the process of oil production. Moreover, the stress distribution of the formation becomes more and more uneven, resulting in increasing difficulties of high and stable production of oil and gas fields. Repeated hydraulic fracturing is an important measure to control water and stabilize oil in old oil and gas field. At present, the domestic repeated fracturing is faced with severe problems, so it is urgent to improve the new technology to reverse the low success rate of repeated fracturing in China and the low permeability of oil and gas reservoir after repeated fracturing. Big rock damage? Low yield increase, short validity period, scientific research lagging behind the site construction and other passive situation. Directional hydraulic perforation fracturing technology is a new type of stimulation and volume reconstruction technology which integrates directional hydraulic perforation and fracturing. It can be applied to the volume increasing reconstruction of complex reservoirs such as low permeability oil (gas) and so on. Directional hydraulic perforation fracturing technique can effectively fracture old oil and gas fields, break new reservoir in different directions and form new fracture or fracture network, improve permeability of old reservoir and reduce damage of rock formation. It is propitious to increase the output and final production rate of oil and gas field. In this paper, the superiority of directional hydraulic perforation fracturing technology is analyzed by comparing the traditional hydraulic fracturing technology. The rock breaking mechanism of directional hydraulic perforation reservoir, the initiation of fracture at the top of hydraulic perforation channel and the mechanism of diversion extension of hydraulic fracturing fracture are studied and analyzed respectively. The feasibility and superiority of directional hydraulic perforation fracturing technology are analyzed theoretically. The feasibility and advantages of directional hydraulic perforation fracturing are verified by numerical simulation and analysis. Through theoretical and numerical analysis, it is shown that directional hydraulic perforation fracturing technology can effectively improve the permeability of reservoir and increase production of oil and gas fields.
【學(xué)位授予單位】：新疆大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE357.1

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本文編號(hào)：2117051